1. Department of Medicine and Surgery, University of Salerno , Baronissi , Salerno , Italy
2. Department of Oncology, Haematology and Pathology, Pathology Unit, University Hospital of Salerno , Salerno , Italy
3. Department of Oncology, Haematology and Pathology, Haematology Unit, University Hospital of Salerno , Salerno , Italy
4. Department of Oncology, Haematology and Pathology, Oncology Unit, University Hospital of Salerno , Salerno , Italy
5. Department of Medicine and Surgery, University of Salerno , Via Salvador Allende 1 , Baronissi , Salerno , Italy
6. Pathology Unit, University Hospital of Salerno , Salerno , Italy